In this world where clarity and blur are intertwined, glasses have become a powerful helper for many people to see the beauty clearly. Today, let us walk into the wonderful world of glasses and take an interesting glasses science tour!
01｜Summary of the development of glasses
The history of glasses can be traced back to 1268 AD. The original glasses were just simple convex lenses used to help the elderly read. As time goes by, technology continues to advance, and the types and functions of glasses are becoming more and more abundant. From myopia glasses, hyperopia glasses to astigmatism glasses, from single-light glasses to progressive multifocal glasses, the development of glasses has witnessed mankind’s unremitting pursuit of clear vision.
02｜Types of glasses
1. Myopia glasses
For myopic friends, myopia glasses are indispensable. It uses the principle of concave lenses to image distant objects on the retina, so that we can see things in the distance clearly.
For example, students look at the blackboard in class and office workers watch the display screen at a distance, all of which need the help of myopia glasses.
2. Hyperopia glasses
In contrast to myopia glasses, hyperopia glasses use convex lenses to help hyperopic patients see nearby objects clearly.
For example, when the elderly read books and mend clothes, farsighted glasses play an important role.
3. Astigmatism glasses
If there is an astigmatism problem in the eyes, astigmatism glasses come in handy. It can correct the irregular shape of the eyeball and focus the light accurately on the retina.
4. Sunglasses
Not only a fashion item, but also a weapon to protect the eyes from ultraviolet damage.
When traveling and outdoor activities in summer, wearing sunglasses can effectively reduce the damage of ultraviolet rays to the eyes.
3｜How to choose glasses
1. Accurate optometry
This is the most critical first step. Go to a professional optical shop or hospital for optometry to obtain accurate vision data.
During the summer vacation, the Clairvoyance Optical Shop provides free optometry services for everyone.
2. Consider the material of the frame
There are many options such as metal, plastic, and plate, which should be determined according to comfort, beauty and personal skin quality.
3. Frame shape
Choose according to the face shape, for example, a round face is suitable for a square frame, and a square face is suitable for a round frame.
04｜Maintenance and maintenance of glasses
1. Regular cleaning
Use a special glasses cloth to wipe gently and avoid using rough objects to wipe the lenses.
2. Proper storage
Avoid contact between lenses and hard objects to prevent scratches.
In short, glasses are not only a tool for correcting vision, but also a good partner in our lives. I hope that through today’s popular science, everyone can have a deeper understanding of glasses.
Let us use a clear vision to appreciate this beautiful and colorful world together!
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Post time: Sep-23-2024